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W. A .DOANE- AWood-Pulping," Machine.

Ne. 224.405. Patented Feb. 10.1880.

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A UNITED STATES PATENT OFFICE.

I WILLVARD A. DOANE, OF KAUKVAUNA, WISGON SIN.

WOOD-PLPING MACHINE.

SPECIFICATION forming part f, Lettei Patent NO.; 2.24,405, :Febmlaly 10,` 1880.

Y Applicationiled January ]`.6,11;8E40.7 Y l Y To all whom fit may concern):` Y

Be it known that I, WILLARD A. DoifNE,`

of Kaukauna, in the county of Outagamie and v State of Wisconsin, have invented certain Improvements'in WoodiPulping Machines, of which the following is a specification.

My invention relates to that class of woodpulping machines wherein th'e wood is carried by feeding mechanism against a 'revolving grinding-stone; and theobject of the invention is to provide a single machine which may adj usted to feed the wood to the stone at different speeds and to p'resentits grainfin'fdijferent directions thereto as thequality-and condition of the wood and the' character of the pulp required may demand.

The reduction of wood to pulp by use.

of a grindingstone is well kuowuointhe art. qualities of liber or pulp the Iwood, mustbe fed to the stone at different speeds, dependent.

upon the characterrand conditionof the wood. It is also known that'by presenting the grain of the wood in different positions or directions to the grinding-surface `the lengthand character of the ber maybe greatly changed.

My machineis constructedwith the abovenamed facts in View, so that it may be quickly adjusted to feed the wood in such manner as circumstances may in eachcaserender necessary.

. and the wood is forced against the same by means of a reciprocating head, the face of speed at which the presser-head. advances ac-V v cording to the hardness of the wood being op erated upon..

Figure 1 represents a top-planview of my machine; Fig.2, a longitudinal verticalcentral section of the same; Figs. 3, 4, and `5, plan views illustrating the different `positions in which the wood may be presented to the` stone.

It is ,also known that to secure given' The grindingstone is arranged as usual@ `the stone;V This presser head consists of a vertical 'Lrear`plate, a, secured: rigidly to a carrier-rod, D, and a front plate, b, connected to 'plate-thy means of two rods or stems, c. The

rodsfc are securedrigidly to the plate b and extended looselythrough plate c, and are provided between the plates with spiral sprin gs d to force the plates apart, and on the rear ends with nuts d to limit the separation of the plates. vThe springs are made of such strength that they give 'only in the event of the entrance of asolid foreign substance be'- tweenthelhead and stone, or of a hard knot being encountered inthewood.V l

, Duri 4g fthe ordinary operation of the Vmachinefthe head carries the'wood forward withalpositivegand steadymovement; but in the event" of 'an excessive auddangerous resistance to the head theentire feeding mechanism is relieved by the yielding of the springs.

To the front of theplate b, at one end, I

hinge a second plate,ye, against which the wood bears when the machine is in action.

To the free end of the plate e, I attach an arm, f, which is extended backward through the platesfa b and provided with a nut or nuts, f by means of which the plate e may be swung forward'and fixed at any angle or inclination `to the line in which 'the head reciprocates, as

shown in Fig. 3, so that the head will be caused to present the usual rectangular blocks of wood with their grain at an inclination to the stone,

as represented in the last-mentioned figure.

The advance of the presser-head is secured by Aproviding its carrier-rod D with a vertical arm, h, and providing avertical wheel or disk, E, with studs or crank-pins i, whichact against the arm h pushing the arm andV presser-head forward, and thenriding off from the lower end of the. arm and'permtting. the head and other parts to recede. The retraction of the IOO head is secured by passing a weighted chain, k, from the rod D over a supporting-pulley, as clearly represented in Fig. 2.

The wheel E may have any desired number of the cran k-pins to act successively, and thus advance the presser-head several times during each rotation of the disk.

The crank-pins should be made adjustable to and from the center of the disk E, and the arm h made adj ustable lengthwise on the rod D.

The adjustment of the arm backward upon the rod, in connection with the adjustment of the crank-pins outward, will give the presserhead an increased length of movement and adapt the machine for feeding long blocks or bolts of wood. This is mainly advantageous when the wood is to be ground squarely across the end of the grain, which I find to be in some cases a very desirabler method.

The speed at which the wood is advanced may be increased'by moving the crank-pins outward and giving the arm j' a proper adjustment in relation thereto. This may be done without increasing the length of movement of the head by limiting the backward movement of the same.

The crank-pins may be provided with rollers in order to reduce the friction, and may be adjusted by seating them in slots in the disk and securing them by nuts, or by screwing them into holes located at different points in the wheel. as shown in the drawings.

The disk or wheel E is mounted on one end of a horizontal shaft, G, which may be mounted in any suitable bearing, and which has on the outer end a worm-wheel, H, driven by a worm or screw, I. The worm. is provided at one end with a bevel-gear, J, driven by a corresponding gear, K, which latter is, in turn, mounted on a shaft, `L, provided with a driving-pulley, M. vBy this combination motion is communicated to the disk and crank-pins, and thence to the presser-head, which is advanced slowly and retracted quickly.

The worm-teeth may-be formed on the edge ot' the disk which carries the crank-pins, and one shaft may carry crank-wheels for a num'- ber of machines.

I claim- 1. The combination ot' the grinding-wheel, the reciprocating presser head having the hinged face-plate, and means for adjusting thc same, substantially as shown and described.

2. The combination ofthe plates a b, hinged plate e, springs d, rods c, and adjustable arm f.

3. The'combination of' a grinding-surface, a reciprocating carrier advanced by positivelyacting mechanism, and a yielding face or front upon said carrier.

4. The combination of the presser-head, a transverse arm, h, connected therewith, and a crank-pin arranged to act against said arm, and adjustable as to the extent of its throw or sweep.

5. The combination of the presser-head, the transverse arm h, connected with said head, and adjustable to and from the same, and a crank-pin arranged to act against and disengage from said arm.

6. The combination of a reciprocating member provided with a transverse arm, h, a crankpin arranged to act against said arm, and, afterforcing the same in one direction, pass from its end, and means, substantially such as shown, for returning the arm to its original position preparatory to another action of the crank-pin.

7. The combination ofthe presser-rod D, arm f, crank-pin, and worm-gear, as described.

WILLARD A. DOANE.

Witnesses:

WILLIAM W. DODGE, P. T. DODGE. 

